CN101696085A - Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof - Google Patents
Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof Download PDFInfo
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- CN101696085A CN101696085A CN200910035588A CN200910035588A CN101696085A CN 101696085 A CN101696085 A CN 101696085A CN 200910035588 A CN200910035588 A CN 200910035588A CN 200910035588 A CN200910035588 A CN 200910035588A CN 101696085 A CN101696085 A CN 101696085A
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Abstract
The invention discloses yttrium aluminum garnet fluorescent glass, a manufacturing method thereof and use thereof. The yttrium aluminum garnet fluorescent glass comprises a glass matrix of BaO-Na2O-B2O3-SiO2-Al2O3 and a yttrium aluminum garnet fluorescent powder component. The yttrium aluminum garnet fluorescent glass is manufactured by mixing initial components and yttrium aluminum garnet fluorescent powder, calcining the mixture and casting. The method has the advantages of simple preparation process, easy processing and forming, cheap raw material and large-scale industrial production. The YAG fluorescent powder is well matched with a blue InGaN chip, has the advantages of high luminescent efficiency, stable performance and the like and is the preferred yellow fluorescent material for packaging white LEDs. Indeed, the YAG fluorescent powder glass manufactured by sintering the YAG fluorescent powder in glass is a novel fluorescent material with high performance, low cost and wide application range.
Description
Technical field:
The present invention relates to Yttrium aluminum garnet fluorescent glass and manufacture method and purposes that a kind of blue chip excites.
Background technology:
Photodiode (LED) is with its inherent advantage, as power saving, life-span length, vibration resistance, response speed is fast and characteristics such as environmental protection are widely used in fields such as pilot lamp, signal lamp, display screen, is just beginning to enter the lighting source field.Utilize blue InGaN (InGaN) led chip and yellow to mix cerium ion (Ce at present
3+) (Cerium-doped YttriumAluminum Garnet is called for short YAG:Ce to the activated yttrium aluminum garnet
3+) fluorescent material, in the scheme that realizes white light LEDs, occupy dominant position.For the method for this realization white light LEDs, domestic main employing of present stage be dot fluorescent powder epoxy glue technology, promptly directly apply fluorescent material and organic resin or silica gel mixture at chip surface.Adopt the white light LEDs of this coating method, make the led chip temperature increase owing to improve output rating.Because fluorescent material is close to the chip pyrotoxin, temperature rise causes the fluorescent material performance degradation, produces the optical color parameter decay, simultaneously, heat that the blue led chip distributes and short-wave radiation cause the organic resin matrix transmittance of fluorescent material on the blue led chip to descend, and make the life-span of white light LEDs be tending towards shortening.In order to address these problems, the CN1836339A patent is told the method at white light LEDs lens surface plating fluorescent powder membrane, the CN101016618 patent is told the method for vapor deposition film-formation, the CN10112386 patent is told fluorescent material is filled into the fluoroscopic coating method that punches, and the CN1976069 patent is told fluorescent powder coated at glass or resin surface.These and similar patent do not relate to YAG fluorescent material are evenly distributed on making method in the concrete glass.
Summary of the invention:
The object of the present invention is to provide a kind of luminous efficiency height, stable performance, technology are simple, be easy to machine-shaping, starting material cheapness Yttrium aluminum garnet fluorescent glass and manufacture method and purposes.
Technical solution of the present invention is:
A kind of Yttrium aluminum garnet fluorescent glass is characterized in that: glass matrix is: BaO-Na
2O-B
2O
3-SiO
2-Al
2O
3, and have the yttrium aluminium garnet fluorescent powder composition.
A kind of manufacture method of Yttrium aluminum garnet fluorescent glass is characterized in that:, made through calcining, casting forming with after yttrium aluminium garnet fluorescent powder mixes by initial composition; Wherein initial composition is made up of following component in percentage by weight:
BaCO
3 20-40％
Na
2CO
3 5-20％
H
3BO
3 20-40％
SiO
2 5-20％
Al
2O
3 10-30％；
The consumption of yttrium aluminium garnet fluorescent powder is 10～50% of an initial composition weight.
Yttrium aluminium garnet fluorescent powder is YAG:Ce, Y
3-XGe
XAl
5O
12: Ce, Tb
3Al
5O
12: one or more mixtures among the Ce.
Calcining temperature is 1000～1500 ℃, and calcination time is 1～12 hour.
Behind the casting forming also through annealing, cutting, polishing, polished finish.
The surface of Yttrium aluminum garnet fluorescent glass is plane, concave surface or convex surface.
The application of a kind of Yttrium aluminum garnet fluorescent glass in preparation LED lamp.
The Yttrium aluminum garnet fluorescent glass excitaton source is the blue InGaN led chip of emission 450-480nm, and YAG fluorescent glass absorbs the excitaton source blue light and is converted to gold-tinted, and gold-tinted and blue light constitute complementary color, form white light source.Yttrium aluminum garnet fluorescent glass is detachable form.Change YAG fluorescent glass ground thickness simply, can change the colour temperature of white light LEDs or LED lamp.
The present invention has the advantage that preparation technology is simple, be easy to machine-shaping, starting material cheapness and energy large-scale industrial production, and YAG fluorescent material can mate blue light InGaN chip preferably, having luminous efficiency height, steady performance, is the yellow fluorescent material of encapsulation white light LEDs first-selection.The YAG fluorescent glass that YAG fluorescent material sintering is made in glass, a kind of high-performance and low-cost of can yet be regarded as, the wide novel fluorescent material of application.
With YAG fluorescent glass encapsulation preparation white light LEDs or LED lamp, can avoid a fluorescent material directly to be coated in chip surface, the shortcoming of fluorescent material that causes and organic resin or the decay of silica gel mixture reduces the absorption of chip to scattered light, improves light extraction efficiency.And YAG fluorescent glass thin slice utilizes sophisticated glass processing technology, is easy to be processed into different shape, is convenient to adjust light distribution, color temperature distribution and color developing index, improves the yield rate of colour temperature and other index consistency and product in producing in batches.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the White-light LED package structure synoptic diagram of embodiment 4.
Fig. 2 is the white light LEDs cylinder lamp structure synoptic diagram of embodiment 5.
Embodiment:
Embodiment 1:
According to glass matrix original material prescription, the required medicine powder of weighing, i.e. BaCO
3(1g), Na
2CO
3(0.4g), H
3BO
3(0.9g), SiO
2(0.3g), Al
2O
3(0.56g), YAG (0.83g) grinds load weighted glass matrix original material with mortar, it is mixed.The corundum crucible that to pack into through the mixing material after grinding adds crucible cover, puts into the atmosphere protection resistance furnace.Calcined 4 hours down at 1300 ℃, anneal, cut, polish, be polished to YAG fluorescent glass thin slice for 500 ℃ behind the casting forming, glass matrix is: BaO-Na
2O-B
2O
3-SiO
2-Al
2O
3, be used for the white light LEDs encapsulation.
Embodiment 2:
According to glass matrix original material prescription, the required medicine powder of weighing, i.e. BaCO
3(1g), Na
2CO
3(0.4g), H
3BO
3(0.9g), SiO
2(0.3g), Al
2O
3(0.56g), Y
3-XGe
XAl
5O
12: Ce (0.83g), load weighted glass matrix original material is ground with mortar, it is mixed.The corundum crucible that to pack into through the mixing material after grinding adds crucible cover, puts into the atmosphere protection resistance furnace.Calcined 4 hours down at 1300 ℃, anneal, cut, polish, be polished to YAG fluorescent glass thin slice for 500 ℃ behind the casting forming, glass matrix is: BaO-Na
2O-B
2O
3-SiO
2-Al
2O
3, be used for the low color temperature white light LED encapsulation.
Embodiment 3:
According to glass matrix original material prescription, the required medicine powder of weighing, i.e. BaCO
3(1g), Na
2CO
3(0.4g), H
3BO
3(0.8g), SiO
2(0.3g), Al
2O
3(0.65g), YAG (0.83g) grinds load weighted glass matrix original material with mortar, it is mixed.The corundum crucible that to pack into through the mixing material after grinding is put into high temperature resistance furnace.Calcined 4 hours down at 1400 ℃, anneal, cut, polish, be polished to YAG fluorescent glass thin slice for 500 ℃ behind the casting forming, glass matrix is: BaO-Na
2O-B
2O
3-SiO
2-Al
2O
3, be used for the white light LEDs encapsulation.
Embodiment 4:
At first make lens shape YAG fluorescent glass 3, encapsulate according to the white-light LED structure synoptic diagram of Fig. 1 according to embodiment 1.In the reverberation bowl that support 4 constitutes, pass through blue InGaN (InGaN) led chip 1 of bonding material 2 bondings, chip 1 emission wavelength is the blue light of 450-480nm, on chip, be not coated with YAG fluorescent material, lens shape YAG fluorescent glass 3 directly is installed on support 4, between YAG fluorescent glass lens and support reverberation bowl, is irritated silica gel 5.Lens shape YAG fluorescent glass absorbs excitaton source part blue light and is converted to gold-tinted, and gold-tinted and transmit blue constitute complementary color, form white light source.
Embodiment 5:
Make writing board shape YAG fluorescent glass according to embodiment 2, according to white light LEDs cylinder lamp structure synoptic diagram shown in Figure 2, is emission wavelength blue InGaN (InGaN) led chip 6 of 450-480nm, by bonding material 7 Direct Bonding in parabolic shape metal shell 8, utilize large-area Down lamp metal shell 8 heat radiations, parabolic shape metal shell 8 inboard plating high reflection films, chip 6 is positioned at parabolic shape focal position, still be not coated with YAG fluorescent material on the chip 1, directly at the Down lamp light-emitting window, writing board shape YAG fluorescent glass 9 is installed, and YAG fluorescent glass 9 absorbs chip 6 excitaton source part blue lights and is converted to gold-tinted, and gold-tinted and transmit blue stack constitute white light source.Also has silica gel 10 among the figure.
Embodiment 6:
Initial composition is made up of following component in percentage by weight:
BaCO
320-40% (example 20%, 30%, 40%)
Na
2CO
35-20% (example 5%, 12%, 20%)
H
3BO
320-40% (example 20%, 30%, 40%)
SiO
25-20% (example 5%, 12%, 20%)
Al
2O
310-30% (example 10%, 20%, 30%);
The consumption of yttrium aluminium garnet fluorescent powder is 10～50% (examples 10%, 30%, 50%) of initial composition weight.
All the other are with embodiment 1.
Claims (9)
1. Yttrium aluminum garnet fluorescent glass, it is characterized in that: glass matrix is: BaO-Na
2O-B
2O
3-SiO
2-Al
2O
3, and have the yttrium aluminium garnet fluorescent powder composition.
2. the manufacture method of a Yttrium aluminum garnet fluorescent glass is characterized in that:, made through calcining, casting forming with after yttrium aluminium garnet fluorescent powder mixes by initial composition; Wherein initial composition is made up of following component in percentage by weight:
BaCO
3 20-40％
Na
2CO
3 5-20％
H
3BO
3 20-40％
SiO
2 5-20％
Al
2O
3 10-30％；
The consumption of yttrium aluminium garnet fluorescent powder is 10～50% of an initial composition weight.
3. the manufacture method of Yttrium aluminum garnet fluorescent glass according to claim 2, it is characterized in that: yttrium aluminium garnet fluorescent powder is YAG:Ce, Y
3-XGe
XAl
5O
12: Ce, Tb
3Al
5O
12: one or more mixtures among the Ce.
4. according to the manufacture method of claim 2 or 3 described Yttrium aluminum garnet fluorescent glass, it is characterized in that: calcining temperature is 1000～1500 ℃, and calcination time is 1～12 hour.
5. according to the manufacture method of claim 2 or 3 described Yttrium aluminum garnet fluorescent glass, it is characterized in that: behind the casting forming also through annealing, cutting, polishing, polished finish.
6. according to the manufacture method of claim 2 or 3 described Yttrium aluminum garnet fluorescent glass, it is characterized in that: the surface of Yttrium aluminum garnet fluorescent glass is plane, concave surface or convex surface.
7. the application of the described Yttrium aluminum garnet fluorescent glass of claim 1 in preparation LED lamp.
8. the application of Yttrium aluminum garnet fluorescent glass according to claim 7 in preparation LED lamp is characterized in that: the Yttrium aluminum garnet fluorescent glass excitaton source is the blue InGaN led chip of the blue light of emission 450-480nm.
9. the application of Yttrium aluminum garnet fluorescent glass according to claim 7 in preparation LED lamp, it is characterized in that: Yttrium aluminum garnet fluorescent glass is detachable form.
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|---|---|---|---|
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|---|---|---|---|
| CN2009100355883A CN101696085B (en) | 2009-09-27 | 2009-09-27 | Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101696085A true CN101696085A (en) | 2010-04-21 |
| CN101696085B CN101696085B (en) | 2012-02-08 |
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|---|---|---|---|
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